"This Powerblanket heated blanket is designed to keep 420-lb. liquid propane and other gas cylinder tanks at their optimal temperatures to maintain optimal pressure, enhance performance and increase efficiency. U.S.A. Closure Type Strap and buckle, Compatible With 420 Lb. Cylinders, Volts 120V, Amps 4.5, Common Usage Keep gas cylinders at optimal temperature, Dimensions L x W in. 53 x 104, Thermal Cutoff Safety Device Yes, Temperature Range F 80-90 10F, Receptacle Type Required Standard, Finish Type Vinyl outer shell, Plug Type 3-prong, Capacity 1 Cylinder, Power Cord ft. 6, Thermostat Included Yes, Watts 548, Cylinders qty. 1 420 Lb. cylinder."